Budibase is an open-source low-code platform. Prior to version 3.33.4, a server-side request forgery (SSRF) vulnerability exists in Budibase's REST datasource connector. The platform's SSRF protection mechanism (IP blacklist) is rendered completely ineffective because the BLACKLIST_IPS environment variable is not set by default in any of the official deployment configurations.
When this variable is empty, the blacklist function unconditionally returns false, allowing all requests through without restriction. This issue has been patched in version 3.33.4.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/Budibase/budibase/commit/5b0fe83d4ece52696b62589cba89ef50cc0…
security-advisories@github.com
https://github.com/Budibase/budibase/pull/18236
security-advisories@github.com
https://github.com/Budibase/budibase/releases/tag/3.33.4
security-advisories@github.com
https://github.com/Budibase/budibase/security/advisories/GHSA-7r9j-r86q-7g45
security-advisories@github.com